Alarm clock



FIG. 1 is a perspective view of an alarm clock showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for an alarm clock, as shown and described. 